Patents by Inventor Tetsuya Samura

Tetsuya Samura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9196391
    Abstract: A polyurea electrolyte includes a polyurea resin formed by a polymerization of a first compound having two or more isocyanate groups and a second compound having two or more amino groups. The first compound or the second compound contains ten or more carbon chains, and the first compound or the second compound contains a sulfonic acid group or a carboxylic acid group. A method for manufacturing the polyurea electrolyte includes neutralizing the sulfonic acid group or the carboxylic acid group in the first compound or the second compound by a neutralizing agent; after the neutralizing, polymerizing the first compound and the second compound; and after the polymerizing, removing the neutralizing agent from a polymer of the first compound and the second compound.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: November 24, 2015
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Takuya Hasegawa, Shogo Takamuku, Tetsuya Samura, Hiroshi Tabata, Toyo Yano
  • Publication number: 20120094212
    Abstract: A polyurea electrolyte includes a polyurea resin formed by a polymerization of a first compound having two or more isocyanate groups and a second compound having two or more amino groups. The first compound or the second compound contains ten or more carbon chains, and the first compound or the second compound contains a sulfonic acid group or a carboxylic acid group. A method for manufacturing the polyurea electrolyte includes neutralizing the sulfonic acid group or the carboxylic acid group in the first compound or the second compound by a neutralizing agent; after the neutralizing, polymerizing the first compound and the second compound; and after the polymerizing, removing the neutralizing agent from a polymer of the first compound and the second compound.
    Type: Application
    Filed: June 10, 2010
    Publication date: April 19, 2012
    Inventors: Takuya Hasegawa, Shogo Takamuku, Tetsuya Samura, Hiroshi Tabata, Toyo Yano
  • Patent number: 5223353
    Abstract: A solid electrolyte with excellent ionic conductivity, which is composed of a viscoelastic material having a structure of a polymerized material and a non-aqueous electrolytic solution contained in the polymerized material, a chemical element containing the solid electrolyte, and a method of fabricating the solid electrolyte are described. This solid electrolyte contains the non-aqueous electrolytic solution in an amount of 200 wt. % or more of the polymer and has a modulus of elasticity of 10.sup.2 to 10.sup.5 dyne/cm.sup.2, and an elongation of 20% or more.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: June 29, 1993
    Assignees: Ricoh Company, Ltd., Sanyo Chemical Industries, Ltd.
    Inventors: Toshiyuki Ohsawa, Toshiyuki Kabata, Okitoshi Kimura, Sachiko Kimura, Tetsuya Samura
  • Patent number: 4026829
    Abstract: A flexible polyurethane foam which produces a reduced amount of smoke when in contact with a flame and which has flame resistant properties is produced by reacting, under foaming conditions, a polyetherpolyol having a hydroxyl number of 25 - 80 and, a primary hydroxyl group content of at least 10% and a liquid mixture of a polyoxyethylenepolyol modified polyisocyanate and a polyisocyanate monomer.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: May 31, 1977
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Tetsuya Samura, Isao Ishikawa, Kozaburo Nagata